1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.systemui.statusbar.policy;
18 
19 import android.content.Context;
20 import android.content.res.Configuration;
21 import android.content.res.Resources;
22 import android.database.ContentObserver;
23 import android.graphics.Outline;
24 import android.graphics.Rect;
25 import android.os.SystemClock;
26 import android.provider.Settings;
27 import android.util.ArrayMap;
28 import android.util.AttributeSet;
29 import android.util.Log;
30 import android.view.MotionEvent;
31 import android.view.View;
32 import android.view.ViewConfiguration;
33 import android.view.ViewGroup;
34 import android.view.ViewOutlineProvider;
35 import android.view.ViewTreeObserver;
36 import android.view.accessibility.AccessibilityEvent;
37 import android.widget.FrameLayout;
38 
39 import com.android.systemui.ExpandHelper;
40 import com.android.systemui.Gefingerpoken;
41 import com.android.systemui.R;
42 import com.android.systemui.SwipeHelper;
43 import com.android.systemui.statusbar.ExpandableView;
44 import com.android.systemui.statusbar.NotificationData;
45 import com.android.systemui.statusbar.phone.PhoneStatusBar;
46 
47 import java.util.ArrayList;
48 
49 public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.Callback, ExpandHelper.Callback,
50         ViewTreeObserver.OnComputeInternalInsetsListener {
51     private static final String TAG = "HeadsUpNotificationView";
52     private static final boolean DEBUG = false;
53     private static final boolean SPEW = DEBUG;
54     private static final String SETTING_HEADS_UP_SNOOZE_LENGTH_MS = "heads_up_snooze_length_ms";
55 
56     Rect mTmpRect = new Rect();
57     int[] mTmpTwoArray = new int[2];
58 
59     private final int mTouchSensitivityDelay;
60     private final float mMaxAlpha = 1f;
61     private final ArrayMap<String, Long> mSnoozedPackages;
62     private final int mDefaultSnoozeLengthMs;
63 
64     private SwipeHelper mSwipeHelper;
65     private EdgeSwipeHelper mEdgeSwipeHelper;
66 
67     private PhoneStatusBar mBar;
68 
69     private long mStartTouchTime;
70     private ViewGroup mContentHolder;
71     private int mSnoozeLengthMs;
72     private ContentObserver mSettingsObserver;
73 
74     private NotificationData.Entry mHeadsUp;
75     private int mUser;
76     private String mMostRecentPackageName;
77 
HeadsUpNotificationView(Context context, AttributeSet attrs)78     public HeadsUpNotificationView(Context context, AttributeSet attrs) {
79         this(context, attrs, 0);
80     }
81 
HeadsUpNotificationView(Context context, AttributeSet attrs, int defStyle)82     public HeadsUpNotificationView(Context context, AttributeSet attrs, int defStyle) {
83         super(context, attrs, defStyle);
84         Resources resources = context.getResources();
85         mTouchSensitivityDelay = resources.getInteger(R.integer.heads_up_sensitivity_delay);
86         if (DEBUG) Log.v(TAG, "create() " + mTouchSensitivityDelay);
87         mSnoozedPackages = new ArrayMap<>();
88         mDefaultSnoozeLengthMs = resources.getInteger(R.integer.heads_up_default_snooze_length_ms);
89         mSnoozeLengthMs = mDefaultSnoozeLengthMs;
90     }
91 
updateResources()92     public void updateResources() {
93         if (mContentHolder != null) {
94             final LayoutParams lp = (LayoutParams) mContentHolder.getLayoutParams();
95             lp.width = getResources().getDimensionPixelSize(R.dimen.notification_panel_width);
96             lp.gravity = getResources().getInteger(R.integer.notification_panel_layout_gravity);
97             mContentHolder.setLayoutParams(lp);
98         }
99     }
100 
setBar(PhoneStatusBar bar)101     public void setBar(PhoneStatusBar bar) {
102         mBar = bar;
103     }
104 
getHolder()105     public ViewGroup getHolder() {
106         return mContentHolder;
107     }
108 
showNotification(NotificationData.Entry headsUp)109     public boolean showNotification(NotificationData.Entry headsUp) {
110         if (mHeadsUp != null && headsUp != null && !mHeadsUp.key.equals(headsUp.key)) {
111             // bump any previous heads up back to the shade
112             release();
113         }
114 
115         mHeadsUp = headsUp;
116         if (mContentHolder != null) {
117             mContentHolder.removeAllViews();
118         }
119 
120         if (mHeadsUp != null) {
121             mMostRecentPackageName = mHeadsUp.notification.getPackageName();
122             mHeadsUp.row.setSystemExpanded(true);
123             mHeadsUp.row.setSensitive(false);
124             mHeadsUp.row.setHeadsUp(true);
125             mHeadsUp.row.setHideSensitive(
126                     false, false /* animated */, 0 /* delay */, 0 /* duration */);
127             if (mContentHolder == null) {
128                 // too soon!
129                 return false;
130             }
131             mContentHolder.setX(0);
132             mContentHolder.setVisibility(View.VISIBLE);
133             mContentHolder.setAlpha(mMaxAlpha);
134             mContentHolder.addView(mHeadsUp.row);
135             sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
136 
137             mSwipeHelper.snapChild(mContentHolder, 1f);
138             mStartTouchTime = SystemClock.elapsedRealtime() + mTouchSensitivityDelay;
139 
140             mHeadsUp.setInterruption();
141 
142             // 2. Animate mHeadsUpNotificationView in
143             mBar.scheduleHeadsUpOpen();
144 
145             // 3. Set alarm to age the notification off
146             mBar.resetHeadsUpDecayTimer();
147         }
148         return true;
149     }
150 
151     @Override
onVisibilityChanged(View changedView, int visibility)152     protected void onVisibilityChanged(View changedView, int visibility) {
153         super.onVisibilityChanged(changedView, visibility);
154         if (changedView.getVisibility() == VISIBLE) {
155             sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
156         }
157     }
158 
isShowing(String key)159     public boolean isShowing(String key) {
160         return mHeadsUp != null && mHeadsUp.key.equals(key);
161     }
162 
163     /** Discard the Heads Up notification. */
clear()164     public void clear() {
165         mHeadsUp = null;
166         mBar.scheduleHeadsUpClose();
167     }
168 
169     /** Respond to dismissal of the Heads Up window. */
dismiss()170     public void dismiss() {
171         if (mHeadsUp == null) return;
172         if (mHeadsUp.notification.isClearable()) {
173             mBar.onNotificationClear(mHeadsUp.notification);
174         } else {
175             release();
176         }
177         mHeadsUp = null;
178         mBar.scheduleHeadsUpClose();
179     }
180 
181     /** Push any current Heads Up notification down into the shade. */
release()182     public void release() {
183         if (mHeadsUp != null) {
184             mBar.displayNotificationFromHeadsUp(mHeadsUp.notification);
185         }
186         mHeadsUp = null;
187     }
188 
isSnoozed(String packageName)189     public boolean isSnoozed(String packageName) {
190         final String key = snoozeKey(packageName, mUser);
191         Long snoozedUntil = mSnoozedPackages.get(key);
192         if (snoozedUntil != null) {
193             if (snoozedUntil > SystemClock.elapsedRealtime()) {
194                 if (DEBUG) Log.v(TAG, key + " snoozed");
195                 return true;
196             }
197             mSnoozedPackages.remove(packageName);
198         }
199         return false;
200     }
201 
snooze()202     private void snooze() {
203         if (mMostRecentPackageName != null) {
204             mSnoozedPackages.put(snoozeKey(mMostRecentPackageName, mUser),
205                     SystemClock.elapsedRealtime() + mSnoozeLengthMs);
206         }
207         releaseAndClose();
208     }
209 
snoozeKey(String packageName, int user)210     private static String snoozeKey(String packageName, int user) {
211         return user + "," + packageName;
212     }
213 
releaseAndClose()214     public void releaseAndClose() {
215         release();
216         mBar.scheduleHeadsUpClose();
217     }
218 
getEntry()219     public NotificationData.Entry getEntry() {
220         return mHeadsUp;
221     }
222 
isClearable()223     public boolean isClearable() {
224         return mHeadsUp == null || mHeadsUp.notification.isClearable();
225     }
226 
227     // ViewGroup methods
228 
229     private static final ViewOutlineProvider CONTENT_HOLDER_OUTLINE_PROVIDER =
230             new ViewOutlineProvider() {
231         @Override
232         public void getOutline(View view, Outline outline) {
233             int outlineLeft = view.getPaddingLeft();
234             int outlineTop = view.getPaddingTop();
235 
236             // Apply padding to shadow.
237             outline.setRect(outlineLeft, outlineTop,
238                     view.getWidth() - outlineLeft - view.getPaddingRight(),
239                     view.getHeight() - outlineTop - view.getPaddingBottom());
240         }
241     };
242 
243     @Override
onAttachedToWindow()244     public void onAttachedToWindow() {
245         final ViewConfiguration viewConfiguration = ViewConfiguration.get(getContext());
246         float touchSlop = viewConfiguration.getScaledTouchSlop();
247         mSwipeHelper = new SwipeHelper(SwipeHelper.X, this, getContext());
248         mSwipeHelper.setMaxSwipeProgress(mMaxAlpha);
249         mEdgeSwipeHelper = new EdgeSwipeHelper(touchSlop);
250 
251         int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_min_height);
252         int maxHeight = getResources().getDimensionPixelSize(R.dimen.notification_max_height);
253 
254         mContentHolder = (ViewGroup) findViewById(R.id.content_holder);
255         mContentHolder.setOutlineProvider(CONTENT_HOLDER_OUTLINE_PROVIDER);
256 
257         mSnoozeLengthMs = Settings.Global.getInt(mContext.getContentResolver(),
258                 SETTING_HEADS_UP_SNOOZE_LENGTH_MS, mDefaultSnoozeLengthMs);
259         mSettingsObserver = new ContentObserver(getHandler()) {
260             @Override
261             public void onChange(boolean selfChange) {
262                 final int packageSnoozeLengthMs = Settings.Global.getInt(
263                         mContext.getContentResolver(), SETTING_HEADS_UP_SNOOZE_LENGTH_MS, -1);
264                 if (packageSnoozeLengthMs > -1 && packageSnoozeLengthMs != mSnoozeLengthMs) {
265                     mSnoozeLengthMs = packageSnoozeLengthMs;
266                     if (DEBUG) Log.v(TAG, "mSnoozeLengthMs = " + mSnoozeLengthMs);
267                 }
268             }
269         };
270         mContext.getContentResolver().registerContentObserver(
271                 Settings.Global.getUriFor(SETTING_HEADS_UP_SNOOZE_LENGTH_MS), false,
272                 mSettingsObserver);
273         if (DEBUG) Log.v(TAG, "mSnoozeLengthMs = " + mSnoozeLengthMs);
274 
275         if (mHeadsUp != null) {
276             // whoops, we're on already!
277             showNotification(mHeadsUp);
278         }
279 
280         getViewTreeObserver().addOnComputeInternalInsetsListener(this);
281     }
282 
283     @Override
onDetachedFromWindow()284     protected void onDetachedFromWindow() {
285         mContext.getContentResolver().unregisterContentObserver(mSettingsObserver);
286     }
287 
288     @Override
onInterceptTouchEvent(MotionEvent ev)289     public boolean onInterceptTouchEvent(MotionEvent ev) {
290         if (DEBUG) Log.v(TAG, "onInterceptTouchEvent()");
291         if (SystemClock.elapsedRealtime() < mStartTouchTime) {
292             return true;
293         }
294         return mEdgeSwipeHelper.onInterceptTouchEvent(ev)
295                 || mSwipeHelper.onInterceptTouchEvent(ev)
296                 || super.onInterceptTouchEvent(ev);
297     }
298 
299     // View methods
300 
301     @Override
onDraw(android.graphics.Canvas c)302     public void onDraw(android.graphics.Canvas c) {
303         super.onDraw(c);
304         if (DEBUG) {
305             //Log.d(TAG, "onDraw: canvas height: " + c.getHeight() + "px; measured height: "
306             //        + getMeasuredHeight() + "px");
307             c.save();
308             c.clipRect(6, 6, c.getWidth() - 6, getMeasuredHeight() - 6,
309                     android.graphics.Region.Op.DIFFERENCE);
310             c.drawColor(0xFFcc00cc);
311             c.restore();
312         }
313     }
314 
315     @Override
onTouchEvent(MotionEvent ev)316     public boolean onTouchEvent(MotionEvent ev) {
317         if (SystemClock.elapsedRealtime() < mStartTouchTime) {
318             return false;
319         }
320         mBar.resetHeadsUpDecayTimer();
321         return mEdgeSwipeHelper.onTouchEvent(ev)
322                 || mSwipeHelper.onTouchEvent(ev)
323                 || super.onTouchEvent(ev);
324     }
325 
326     @Override
onConfigurationChanged(Configuration newConfig)327     protected void onConfigurationChanged(Configuration newConfig) {
328         super.onConfigurationChanged(newConfig);
329         float densityScale = getResources().getDisplayMetrics().density;
330         mSwipeHelper.setDensityScale(densityScale);
331         float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop();
332         mSwipeHelper.setPagingTouchSlop(pagingTouchSlop);
333     }
334 
335     // ExpandHelper.Callback methods
336 
337     @Override
getChildAtRawPosition(float x, float y)338     public ExpandableView getChildAtRawPosition(float x, float y) {
339         return getChildAtPosition(x, y);
340     }
341 
342     @Override
getChildAtPosition(float x, float y)343     public ExpandableView getChildAtPosition(float x, float y) {
344         return mHeadsUp == null ? null : mHeadsUp.row;
345     }
346 
347     @Override
canChildBeExpanded(View v)348     public boolean canChildBeExpanded(View v) {
349         return mHeadsUp != null && mHeadsUp.row == v && mHeadsUp.row.isExpandable();
350     }
351 
352     @Override
setUserExpandedChild(View v, boolean userExpanded)353     public void setUserExpandedChild(View v, boolean userExpanded) {
354         if (mHeadsUp != null && mHeadsUp.row == v) {
355             mHeadsUp.row.setUserExpanded(userExpanded);
356         }
357     }
358 
359     @Override
setUserLockedChild(View v, boolean userLocked)360     public void setUserLockedChild(View v, boolean userLocked) {
361         if (mHeadsUp != null && mHeadsUp.row == v) {
362             mHeadsUp.row.setUserLocked(userLocked);
363         }
364     }
365 
366     @Override
expansionStateChanged(boolean isExpanding)367     public void expansionStateChanged(boolean isExpanding) {
368 
369     }
370 
371     // SwipeHelper.Callback methods
372 
373     @Override
canChildBeDismissed(View v)374     public boolean canChildBeDismissed(View v) {
375         return true;
376     }
377 
378     @Override
isAntiFalsingNeeded()379     public boolean isAntiFalsingNeeded() {
380         return false;
381     }
382 
383     @Override
getFalsingThresholdFactor()384     public float getFalsingThresholdFactor() {
385         return 1.0f;
386     }
387 
388     @Override
onChildDismissed(View v)389     public void onChildDismissed(View v) {
390         Log.v(TAG, "User swiped heads up to dismiss");
391         mBar.onHeadsUpDismissed();
392     }
393 
394     @Override
onBeginDrag(View v)395     public void onBeginDrag(View v) {
396     }
397 
398     @Override
onDragCancelled(View v)399     public void onDragCancelled(View v) {
400         mContentHolder.setAlpha(mMaxAlpha); // sometimes this isn't quite reset
401     }
402 
403     @Override
onChildSnappedBack(View animView)404     public void onChildSnappedBack(View animView) {
405     }
406 
407     @Override
updateSwipeProgress(View animView, boolean dismissable, float swipeProgress)408     public boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress) {
409         getBackground().setAlpha((int) (255 * swipeProgress));
410         return false;
411     }
412 
413     @Override
getChildAtPosition(MotionEvent ev)414     public View getChildAtPosition(MotionEvent ev) {
415         return mContentHolder;
416     }
417 
418     @Override
getChildContentView(View v)419     public View getChildContentView(View v) {
420         return mContentHolder;
421     }
422 
423     @Override
onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info)424     public void onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info) {
425         mContentHolder.getLocationOnScreen(mTmpTwoArray);
426 
427         info.setTouchableInsets(ViewTreeObserver.InternalInsetsInfo.TOUCHABLE_INSETS_REGION);
428         info.touchableRegion.set(mTmpTwoArray[0], mTmpTwoArray[1],
429                 mTmpTwoArray[0] + mContentHolder.getWidth(),
430                 mTmpTwoArray[1] + mContentHolder.getHeight());
431     }
432 
escalate()433     public void escalate() {
434         mBar.scheduleHeadsUpEscalation();
435     }
436 
getKey()437     public String getKey() {
438         return mHeadsUp == null ? null : mHeadsUp.notification.getKey();
439     }
440 
setUser(int user)441     public void setUser(int user) {
442         mUser = user;
443     }
444 
445     private class EdgeSwipeHelper implements Gefingerpoken {
446         private static final boolean DEBUG_EDGE_SWIPE = false;
447         private final float mTouchSlop;
448         private boolean mConsuming;
449         private float mFirstY;
450         private float mFirstX;
451 
EdgeSwipeHelper(float touchSlop)452         public EdgeSwipeHelper(float touchSlop) {
453             mTouchSlop = touchSlop;
454         }
455 
456         @Override
onInterceptTouchEvent(MotionEvent ev)457         public boolean onInterceptTouchEvent(MotionEvent ev) {
458             switch (ev.getActionMasked()) {
459                 case MotionEvent.ACTION_DOWN:
460                     if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action down " + ev.getY());
461                     mFirstX = ev.getX();
462                     mFirstY = ev.getY();
463                     mConsuming = false;
464                     break;
465 
466                 case MotionEvent.ACTION_MOVE:
467                     if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action move " + ev.getY());
468                     final float dY = ev.getY() - mFirstY;
469                     final float daX = Math.abs(ev.getX() - mFirstX);
470                     final float daY = Math.abs(dY);
471                     if (!mConsuming && daX < daY && daY > mTouchSlop) {
472                         snooze();
473                         if (dY > 0) {
474                             if (DEBUG_EDGE_SWIPE) Log.d(TAG, "found an open");
475                             mBar.animateExpandNotificationsPanel();
476                         }
477                         mConsuming = true;
478                     }
479                     break;
480 
481                 case MotionEvent.ACTION_UP:
482                 case MotionEvent.ACTION_CANCEL:
483                     if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action done" );
484                     mConsuming = false;
485                     break;
486             }
487             return mConsuming;
488         }
489 
490         @Override
onTouchEvent(MotionEvent ev)491         public boolean onTouchEvent(MotionEvent ev) {
492             return mConsuming;
493         }
494     }
495 }
496